Large diameter head, perfect for attaching roofing felt, slate and shingles. Approx. Pcs Per 1kg: 150. CE Standard: WebBS EN 14592:2008. Corrosion Rating: 2 - Occasionally damp/wet, rural and sheltered areas. Finish: Galvanised. Head Area mm: 78.11. Head Type: Round. Length mm: 75. Material: Carbon Steel. Pack Dimensions L x W x H mm: 265 x 152 x 50. Pack Weight kg: 1.050. Point Length mm: 5.09. Product Code: GCN75B. Service Class: 2. Shank Dia. mm: 3.75. Size mm: 75 x 3.75. Substrates: Roofing. Weight kg: 1.0.